GB2366106B - Multi-level optical signal generation - Google Patents

Multi-level optical signal generation

Info

Publication number
GB2366106B
GB2366106B GB0119998A GB0119998A GB2366106B GB 2366106 B GB2366106 B GB 2366106B GB 0119998 A GB0119998 A GB 0119998A GB 0119998 A GB0119998 A GB 0119998A GB 2366106 B GB2366106 B GB 2366106B
Authority
GB
Grant status
Grant
Patent type
Prior art keywords
multi
optical signal
signal generation
level optical
level
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
GB0119998A
Other versions
GB0119998D0 (en )
GB2366106A (en )
Inventor
Robert Anthony Griffin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Marconi Optical Components Ltd
Marconi Caswell Ltd
Oclaro Technology Ltd
Original Assignee
Marconi Optical Components Ltd
Marconi Caswell Ltd
Oclaro Technology Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Grant date

Links

Classifications

    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50Transmitters
    • H04B10/516Details of coding or modulation
    • H04B10/54Intensity modulation
    • H04B10/541Digital intensity or amplitude modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50Transmitters
    • H04B10/501Structural aspects
    • H04B10/503Laser transmitters
    • H04B10/505Laser transmitters using external modulation
    • HELECTRICITY
    • H04ELECTRIC COMMUNICATION TECHNIQUE
    • H04BTRANSMISSION
    • H04B10/00Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/50Transmitters
    • H04B10/501Structural aspects
    • H04B10/503Laser transmitters
    • H04B10/505Laser transmitters using external modulation
    • H04B10/5053Laser transmitters using external modulation using a parallel, i.e. shunt, combination of modulators
GB0119998A 2000-08-19 2001-08-16 Multi-level optical signal generation Expired - Fee Related GB2366106B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB0020462A GB0020462D0 (en) 2000-08-19 2000-08-19 Multi level optical signal generation
GB0022606A GB0022606D0 (en) 2000-08-19 2000-09-13 Multi-level optical signal generation

Publications (3)

Publication Number Publication Date
GB0119998D0 GB0119998D0 (en) 2001-10-10
GB2366106A true GB2366106A (en) 2002-02-27
GB2366106B true GB2366106B (en) 2004-06-23

Family

ID=26244862

Family Applications (1)

Application Number Title Priority Date Filing Date
GB0119998A Expired - Fee Related GB2366106B (en) 2000-08-19 2001-08-16 Multi-level optical signal generation

Country Status (5)

Country Link
US (1) US20040021829A1 (en)
EP (1) EP1310053A1 (en)
CA (1) CA2419920A1 (en)
GB (1) GB2366106B (en)
WO (1) WO2002017517A1 (en)

Families Citing this family (32)

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US7505589B2 (en) * 2003-09-09 2009-03-17 Temarylogic, Llc Ternary and higher multi-value digital scramblers/descramblers
US20110064214A1 (en) * 2003-09-09 2011-03-17 Ternarylogic Llc Methods and Apparatus in Alternate Finite Field Based Coders and Decoders
US20050069330A1 (en) * 2003-09-29 2005-03-31 Yuan-Hua Kao System and method for optical transmission
US7643632B2 (en) * 2004-02-25 2010-01-05 Ternarylogic Llc Ternary and multi-value digital signal scramblers, descramblers and sequence generators
US7696785B2 (en) * 2004-02-25 2010-04-13 Ternarylogic Llc Implementing logic functions with non-magnitude based physical phenomena
US7218144B2 (en) * 2004-02-25 2007-05-15 Ternarylogic Llc Single and composite binary and multi-valued logic functions from gates and inverters
US20100164548A1 (en) * 2004-09-08 2010-07-01 Ternarylogic Llc Implementing Logic Functions With Non-Magnitude Based Physical Phenomena
US7580472B2 (en) * 2004-02-25 2009-08-25 Ternarylogic Llc Generation and detection of non-binary digital sequences
US8374289B2 (en) 2004-02-25 2013-02-12 Ternarylogic Llc Generation and detection of non-binary digital sequences
US20070110229A1 (en) * 2004-02-25 2007-05-17 Ternarylogic, Llc Ternary and Multi-Value Digital Signal Scramblers, Descramblers and Sequence of Generators
US7548092B2 (en) 2004-02-25 2009-06-16 Ternarylogic Llc Implementing logic functions with non-magnitude based physical phenomena
US7873284B2 (en) * 2004-04-22 2011-01-18 Alcatel-Lucent Usa Inc. Quadrature amplitude modulation of optical carriers
US20060021003A1 (en) * 2004-06-23 2006-01-26 Janus Software, Inc Biometric authentication system
US7562106B2 (en) * 2004-08-07 2009-07-14 Ternarylogic Llc Multi-value digital calculating circuits, including multipliers
EP1641151A1 (en) * 2004-09-23 2006-03-29 Alcatel Alsthom Compagnie Generale D'electricite Method and device for generating a four-level optical signal
US7558487B2 (en) * 2005-09-25 2009-07-07 Alcatel-Lucent Usa Inc. Multilevel amplitude and phase encoded signal generation
US7668256B2 (en) * 2006-07-20 2010-02-23 Alcatel-Lucent Usa Inc. Method and apparatus for the generation and detection of optical differential varied-multilevel phase-shift keying with pulse amplitude modulation (ODVMPSK/PAM) signals
JP2008216824A (en) * 2007-03-07 2008-09-18 Nec Corp Light intensity modulating device and method thereof, and optical transmission system using the same
WO2008117460A1 (en) * 2007-03-27 2008-10-02 Fujitsu Limited Multilevel light intensity modulator
GB0906715D0 (en) * 2009-04-20 2009-06-03 Firecomms Ltd Method for generating multi-level optical signals
EP2462482A1 (en) * 2009-08-05 2012-06-13 Danmarks Tekniske Universitet Encoding an optical signal using a wireless radio-frequency signal
US8380085B2 (en) * 2009-08-31 2013-02-19 Nec Laboratories America, Inc. High-speed multi-level electronic signal generation for optical communications
US8577026B2 (en) 2010-12-29 2013-11-05 Ternarylogic Llc Methods and apparatus in alternate finite field based coders and decoders
ES2430467B1 (en) * 2011-03-04 2014-08-27 Universitat Politècnica De Catalunya Method and apparatus for bidirectional optical link with simultaneous amplitude and phase modulation by an integrated semiconductor device agnostic wavelength.
US8798480B2 (en) * 2011-10-05 2014-08-05 Nec Laboratories America, Inc. High-speed optical 8-QAM modulation by cascading dual-drive mach-zehnder modulator with I/Q modulator
EP2745434A1 (en) * 2011-10-19 2014-06-25 Telefonaktiebolaget LM Ericsson (PUBL) Optical modulator and method of encoding communications traffic in a multilevel modulation format
KR20140122355A (en) * 2013-04-09 2014-10-20 한국전자통신연구원 Directly modulated multi-level optical signal generator and method thereof
US9344195B2 (en) * 2013-04-30 2016-05-17 Broadcom Corporation Multiple level signaling for passive optical networks
US9712247B2 (en) 2013-11-20 2017-07-18 Cisco Technology, Inc. Low bit rate signaling with optical IQ modulators
US9838239B2 (en) * 2015-01-22 2017-12-05 Futurewei Technologies, Inc. Digital generation of multi-level phase shifting with a Mach-Zehnder modulator (MZM)
KR20170028095A (en) * 2015-09-03 2017-03-13 삼성전자주식회사 An optical modulator and a data processing system using the same
WO2017134483A1 (en) * 2016-02-01 2017-08-10 Telefonaktiebolaget Lm Ericsson (Publ) Reconfigurable optical modulator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS635633A (en) * 1986-06-25 1988-01-11 Nec Corp Optical multivalued communication system
US5008957A (en) * 1988-03-03 1991-04-16 Nec Corporation Multilevel optical signal transmitter
EP0477875A2 (en) * 1990-09-25 1992-04-01 Canon Kabushiki Kaisha Optical communication system and transmitting apparatus for use therein
US5436921A (en) * 1994-06-22 1995-07-25 Eastman Kodak Company High dynamic range laser diode direct modulation
US5510919A (en) * 1993-12-04 1996-04-23 Alcatel N.V. Optical system for transmitting a multilevel signal
US5822108A (en) * 1997-06-20 1998-10-13 Sun Microsystems, Inc. Digital optical power modulator
WO1999009682A1 (en) * 1997-08-20 1999-02-25 Telefonaktiebolaget Lm Ericsson Optical transmitter system and method

Family Cites Families (3)

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Publication number Priority date Publication date Assignee Title
US3714437A (en) * 1970-08-14 1973-01-30 Bell Telephone Labor Inc Optical communication system with pcm encoding with plural discrete unequally spaced intensity levels
JPH08278523A (en) * 1995-04-05 1996-10-22 Hitachi Ltd Light amplifier
US5627929A (en) * 1995-05-04 1997-05-06 Sandia Corporation Integrated optical XY coupler

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS635633A (en) * 1986-06-25 1988-01-11 Nec Corp Optical multivalued communication system
US5008957A (en) * 1988-03-03 1991-04-16 Nec Corporation Multilevel optical signal transmitter
EP0477875A2 (en) * 1990-09-25 1992-04-01 Canon Kabushiki Kaisha Optical communication system and transmitting apparatus for use therein
US5510919A (en) * 1993-12-04 1996-04-23 Alcatel N.V. Optical system for transmitting a multilevel signal
US5436921A (en) * 1994-06-22 1995-07-25 Eastman Kodak Company High dynamic range laser diode direct modulation
US5822108A (en) * 1997-06-20 1998-10-13 Sun Microsystems, Inc. Digital optical power modulator
WO1999009682A1 (en) * 1997-08-20 1999-02-25 Telefonaktiebolaget Lm Ericsson Optical transmitter system and method

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
S. Walklin & J. Conradi - "Multilevel signalling for increasing...."; J. Lightwave Tech.; Vol. 17; No. 11; pp. 2235-2248; 1999; USA. *

Also Published As

Publication number Publication date Type
WO2002017517A1 (en) 2002-02-28 application
US20040021829A1 (en) 2004-02-05 application
CA2419920A1 (en) 2002-02-28 application
EP1310053A1 (en) 2003-05-14 application
GB0119998D0 (en) 2001-10-10 grant
GB2366106A (en) 2002-02-27 application

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Legal Events

Date Code Title Description
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
732E Amendments to the register in respect of changes of name or changes affecting rights (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 20080816